- 专利标题: Compliant material for protecting capacitive force sensors and increasing capacitive sensitivity
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申请号: US17141658申请日: 2021-01-05
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公开(公告)号: US11275475B2公开(公告)日: 2022-03-15
- 发明人: Daniel J. Bechstein , Collin R. Petty , Martin P. Grunthaner , Andrew W. Joyce , John R. Matthews , Pavan O. Gupta , Albert Lin
- 申请人: Apple Inc.
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Brownstein Hyatt Farber Schreck, LLP
- 主分类号: G06F3/044
- IPC分类号: G06F3/044
摘要:
A compliant material, such as a conductive foam, is positioned in the dielectric or capacitive gap between drive and sense electrodes and/or other conductive elements of a capacitive and/or other force sensor, such as a TFT or other display element and a sensor assembly. The compliant material prevents damage by preventing and/or cushioning contact. The compliant material may be conductive. By being conductive and being positioned between the electrodes while still being separated from one or more of the electrodes, the compliant material also shortens the effective electrical distance between the electrodes. As a result, the force sensor may be more sensitive than would otherwise be possible while being less vulnerable to damage.